"It was a fine night and he walked home to Bertram's Hotel after first getting into a bus which took him in the opposite direction. It was midnight when he got in and Bertram's Hotel at midnight usually preserved a decorous appearance of everyone having gone to bed. The lift was on a higher floor so the Canon walked up the stairs. He came to his room, inserted the key in the lock, threw the door open and entered!
Good gracious, was he seeing things? But who -- how -- he saw the upraised arm too late. . .
Stars exploded in a kind of Guy Fawkes' display within his head. . ."
--- At Bertram's Hotel, Agatha Christie, 1965